Improvement in padlocks



D. K. MILLER."

i Pad-Locks, &c. A No. 143,990. Pamnvtedocf. 28,1873.

UNITED STATES PA'rEN'I1 OFFICE.

DANIEL K. MILLER, oE PHILADELPHIA, rENNsYLvANIA.V

IMPROVEMENT IN PADLocKs, ac.

Specification formn g part of Letters Patent No. 143,990, dated October 28, 1873 application filed i September 18, 1872.

CASE A.

To all whom it may concern.:

Be it known that I, DANIEL K. MILLER, of the city and county of Philadelphia, State of Pennsylvania, have invented certain Improvements in Locks, of which the following is a specification:

My invention consists in the combinatio11,in a lock, of two or more sets of vibrating tumblers arranged to be simultaneously operated by a single sliding key, a notched bolt, and a dog adapted to notches in the tumblers and to the bolt, as fully described hereafter, the whole operating together to render the lock difficult to pick. My invention further consist in providing the tumblers with certain cam-like inclines for moving the dog.

The two sets of tumblers A B may be hung to separate posts a and e', so as to be operated simultaneously by one key, X, which is inserted through a key-hole, m, so arranged that the edges of both sets of tumblers shall cover and close the same. The lever or dog` D has two arms, b b', each of which, when the tumblers are properly adjusted, enters notches d in the same, thus permitting the dog to turn from opposite a shoulder on the bolt or hasp F, which may then be drawn out or opened by hand or by the action of a spring. When the Vbolt or hasp is returnedto its place, the dog, operated by a spring, turns and releases the tumblers, and at the same time enters a recess, e, and secures the bolt. One of the tumblers B of the setB has a cam-like incline, f', Fig. 3, which, when said tumbler is turned in the direction of its arrow by its spring g, acts upon the arm b of the dog, and forces the latterinto the recess e of the bolt, at the same time disengaging the tumblers. The tumbler B has also a spring, 7L, which bears against the arm b of the dog, and vibrates the latter in the opposite direction, causing it to enter the notches of the tumblers, and to disengage the bolt when the notches are brought into line by the operation of the key. One of the tumblers A of the set Amay also have a eamlike projection, j", to act on the arm b of the c og.

The tumblers may be arranged as in Fig. 4, or otherwise, and the dog may slide instead of vibrating, and may be altered in shape, as required.

I do not claim, broadly, two sets of tumblers in combination with a bolt, but

I claim- 1. The combination, in a lock, of two or more sets of vibrating tumblers, A B, operat ing independently, and arrau ged to be adjusted by a single sliding key, and a dog, D, adapted to notches in all the tumblers and to the bolt, as set forth.

2. The combination, with the dog D, of one or more tumblers having springs and cam-like inclines for moving the said dog in opposite directions, substantially as described.

In testimony whereof I have signed my name to this specication in the presence of twosubscribing witnesses.

DANIEL K. MILLER.

Witnesses:

WM. A. STEEL, HARRY W. DoU'rY. 

